Linear regression equation of mining terrain curvatures caused by hard coal excavation from a few seams and their approximated values by the use of smoothed spline

International Conference on Applied Sciences

自然科学（总论）

Orwat, J.^1^2

Silesian University of Technology, Department of Mining and Geology, Akademicka str., no. 2, Gliwice

44100, Poland^1

Silesian University of Technology, Department of Construction, Akademicka str., no. 5, Gliwice

44100, Poland^2

关键词: Coal exploitation;    Geodetic measurements;    Linear regression equation;    Measured curvature;    Measured values;    Research results;    Spline functions;    Terrain surfaces;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/477/1/012042/pdf
DOI  :  10.1088/1757-899X/477/1/012042

学科分类：自然科学（综合）

来源: IOP

【 摘 要 】

An article presents the own research results of curvatures shaping on the mining terrain surface. The curvatures have been caused by the hard coal exploitation which was conducted within five years in two coal seams situated at the great depth. The curvatures were observed throughout surveys carried out on the points of measuring line established parallel to the edges of mining pits. There was used a longwall excavation system with the cave-in of roof rocks. At the observational line were performed the geodetic measurements of the points heights and the distances between these points, at the time intervals amounted from three to four months. It has been selected such measuring cycle which represents the excavation influences coming from an exploitation of two coal beds. For curvatures measured after the termination of exploitation in these coal seams, it has been designated their average graph by the use of a mean-squared approximation and the smoothed spline functions. Then, it has been determined the equation of linear regression for the measured values of curvatures and their average values. On the base of this equation, it's possible a making of usefulness assessment of the smoothed splines to designation of average courses of measured curvatures.